Probing composite Higgs boson substructure at the HL-LHC

Abstract

The Higgs boson may well be a composite scalar with a finite extension in space. Owing to the momentum dependence of its couplings the imprints of such a composite pseudo Goldstone Higgs may show up in the tails of various kinematic distributions at the LHC, distinguishing it from an elementary state. From the bottom up we construct the momentum dependent form factors to capture the interactions of the composite Higgs with the weak gauge bosons. We demonstrate their impact in the differential distributions of various kinematic parameters for the $pp\to Z^{\ast }H\to l^{+}{l}^{-}b\bar{b}$ channel. We show that this channel can provide an important handle to probe the Higgs' substructure at the HL-LHC.

18 pages, 7 captioned figures, Title changed, Conclusions unchanged, Matches published version

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Cited by in corpus (7)

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• Anomalous couplings in associated $VH$ production with Higgs decay to massive $b$ quarks at NNLO in QCD
• Diboson production in the SMEFT from gluon fusion
• Revisiting $\mathbf{Vh}(\to \mathbf{b}\bar{\mathbf{b}})$ at the LHC and FCC-hh
• Form Factors in Higgs Couplings from Physics Beyond the Standard Model
• Resolving Muon g-2 Anomaly With Partial Compositeness
• Phase transition and gravitational waves in maximally symmetric composite Higgs model